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Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/mmio_warning_test.c')
-rw-r--r--tools/testing/selftests/kvm/x86_64/mmio_warning_test.c126
1 files changed, 0 insertions, 126 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c b/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c
deleted file mode 100644
index e6480fd5c4bd..000000000000
--- a/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
- * mmio_warning_test
- *
- * Copyright (C) 2019, Google LLC.
- *
- * This work is licensed under the terms of the GNU GPL, version 2.
- *
- * Test that we don't get a kernel warning when we call KVM_RUN after a
- * triple fault occurs. To get the triple fault to occur we call KVM_RUN
- * on a VCPU that hasn't been properly setup.
- *
- */
-
-#define _GNU_SOURCE
-#include <fcntl.h>
-#include <kvm_util.h>
-#include <linux/kvm.h>
-#include <processor.h>
-#include <pthread.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <test_util.h>
-#include <unistd.h>
-
-#define NTHREAD 4
-#define NPROCESS 5
-
-struct thread_context {
- int kvmcpu;
- struct kvm_run *run;
-};
-
-void *thr(void *arg)
-{
- struct thread_context *tc = (struct thread_context *)arg;
- int res;
- int kvmcpu = tc->kvmcpu;
- struct kvm_run *run = tc->run;
-
- res = ioctl(kvmcpu, KVM_RUN, 0);
- pr_info("ret1=%d exit_reason=%d suberror=%d\n",
- res, run->exit_reason, run->internal.suberror);
-
- return 0;
-}
-
-void test(void)
-{
- int i, kvm, kvmvm, kvmcpu;
- pthread_t th[NTHREAD];
- struct kvm_run *run;
- struct thread_context tc;
-
- kvm = open("/dev/kvm", O_RDWR);
- TEST_ASSERT(kvm != -1, "failed to open /dev/kvm");
- kvmvm = ioctl(kvm, KVM_CREATE_VM, 0);
- TEST_ASSERT(kvmvm != -1, "KVM_CREATE_VM failed");
- kvmcpu = ioctl(kvmvm, KVM_CREATE_VCPU, 0);
- TEST_ASSERT(kvmcpu != -1, "KVM_CREATE_VCPU failed");
- run = (struct kvm_run *)mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_SHARED,
- kvmcpu, 0);
- tc.kvmcpu = kvmcpu;
- tc.run = run;
- srand(getpid());
- for (i = 0; i < NTHREAD; i++) {
- pthread_create(&th[i], NULL, thr, (void *)(uintptr_t)&tc);
- usleep(rand() % 10000);
- }
- for (i = 0; i < NTHREAD; i++)
- pthread_join(th[i], NULL);
-}
-
-int get_warnings_count(void)
-{
- int warnings;
- FILE *f;
-
- f = popen("dmesg | grep \"WARNING:\" | wc -l", "r");
- fscanf(f, "%d", &warnings);
- fclose(f);
-
- return warnings;
-}
-
-int main(void)
-{
- int warnings_before, warnings_after;
-
- if (!is_intel_cpu()) {
- print_skip("Must be run on an Intel CPU");
- exit(KSFT_SKIP);
- }
-
- if (vm_is_unrestricted_guest(NULL)) {
- print_skip("Unrestricted guest must be disabled");
- exit(KSFT_SKIP);
- }
-
- warnings_before = get_warnings_count();
-
- for (int i = 0; i < NPROCESS; ++i) {
- int status;
- int pid = fork();
-
- if (pid < 0)
- exit(1);
- if (pid == 0) {
- test();
- exit(0);
- }
- while (waitpid(pid, &status, __WALL) != pid)
- ;
- }
-
- warnings_after = get_warnings_count();
- TEST_ASSERT(warnings_before == warnings_after,
- "Warnings found in kernel. Run 'dmesg' to inspect them.");
-
- return 0;
-}